Allow bulk edit of coauthors

co-authors-plus.php

@@ -107,6 +107,10 @@ function __construct() {
 		// Removes the co-author dropdown from the post quick edit
 		add_action( 'admin_head', array( $this, 'remove_quick_edit_authors_box' ) );
 
+		// Add co-author select field to Bulk Edit actions form
+		add_action( 'bulk_edit_custom_box', array( $this, '_action_bulk_edit_custom_box' ), 10, 2 );
+		add_action( 'wp_insert_post_data', array( $this, 'action_bulk_edit_update_coauthors' ), 10, 2 );
+
 		// Restricts WordPress from blowing away term order on bulk edit
 		add_filter( 'wp_get_object_terms', array( $this, 'filter_wp_get_object_terms' ), 10, 4 );
 
@@ -590,6 +594,53 @@ function _action_quick_edit_custom_box( $column_name, $post_type ) {
 		<?php
 	}
 
+	/**
+	 * Bulk Edit co-authors box.
+	 */
+	function _action_bulk_edit_custom_box( $column_name, $post_type ) {
+		if ( 'coauthors' != $column_name || ! $this->is_post_type_enabled( $post_type ) || ! $this->current_user_can_set_authors() ) {
+			return;
+		}
+		?>
+		<label class="bulk-edit-group bulk-edit-coauthors">
+			<span class="title"><?php esc_html_e( 'Authors', 'co-authors-plus' ) ?></span>
+			<div id="coauthors-edit" class="hide-if-no-js">
+				<p><?php echo wp_kses( __( 'Leave the field below blank to keep the authors unchanged. Any change here will overwrite all previously assigned authors.', 'co-authors-plus' ), array( 'strong' => array() ) ); ?></p>
+			</div>
+			<?php wp_nonce_field( 'coauthors-edit', 'coauthors-nonce' ); ?>
+		</label>
+		<?php
+	}
+
+	/**
+	 * Set coauthors from bulk edit.
+	 */
+	function action_bulk_edit_update_coauthors( $post_data, $postarr ) {
+
+		if ( ( ! isset( $postarr['post'] ) ) || ( ! $this->is_post_type_enabled( $post_data['post_type'] ) ) ) {
+			return $post_data;
+		}
+
+		foreach( $postarr['post'] as $post_id ) {
+			$post = get_post( $post_id );
+
+			if ( $this->current_user_can_set_authors( $post ) && isset( $postarr['coauthors'] ) ) {
+					$coauthors = array_map( 'sanitize_title', (array) $postarr['coauthors'] );
+					$this->add_coauthors( $post_id, $coauthors );
+			} else {
+				// If the user can't set authors and a co-author isn't currently set, we need to explicitly set one
+				if ( ! $this->has_author_terms( $post_id ) ) {
+					$user = get_userdata( $post->post_author );
+					if ( $user ) {
+						$this->add_coauthors( $post_id, array( $user->user_nicename ) );
+					}
+				}
+			}
+		}
+
+		return $post_data;
+	}
+
 	/**
 	 * When we update the terms at all, we should update the published post count for each user
 	 */

css/co-authors-plus.css

@@ -6,6 +6,16 @@
 	margin-left: 5em;
 }
 
+#bulk-edit label.bulk-edit-group {
+	clear: both;
+	padding: 0 .5em;
+	margin-top: .5em;
+}
+
+#bulk-edit label.bulk-edit-group #coauthors-list {
+	margin-left: 5.6em;
+}
+
 #coauthors-list {
 	width: 100%;
 	padding: 0 5px;

js/co-authors-plus.js

@@ -393,6 +393,7 @@ jQuery( document ).ready(function () {
 	}
 	else if ( 'edit-php' == adminpage ) {
 
+		// 'Inline edit'
 		var wpInlineEdit = inlineEditPost.edit;
 
 		inlineEditPost.edit = function( id ) {
@@ -429,6 +430,29 @@ jQuery( document ).ready(function () {
 
 			}
 		}
+
+		// 'Bulk edit'
+		var coauthors_initialized_on_bulk_edit = false;
+		var wpBulkEdit = inlineEditPost.setBulk;
+
+		inlineEditPost.setBulk = function() {
+
+			wpBulkEdit.apply( this, arguments );
+
+			// Initialize co-authors, but only on the first 'Bulk edit' interaction.
+			if ( ! coauthors_initialized_on_bulk_edit ) {
+				var bulk_right_column = jQuery( '#bulk-edit .inline-edit-col-right' );
+
+				// Move the Authors section in the right column of the Bulk section.
+				jQuery( '#bulk-edit .bulk-edit-coauthors' ).appendTo( bulk_right_column );
+				// Quick fix to give the last column its 'real' height because
+				// the float:left; for the Post Format dropdown does not help positioning the Authors section we just added
+				bulk_right_column.find( 'div.inline-edit-col' ).addClass( 'wp-clearfix' );
+
+				coauthors_initialize( [] );
+				coauthors_initialized_on_bulk_edit = true;
+			}
+		}
 	}
 
 });